RapidCoffee wrote:Other than Dan's initial tests, I seem to be the only home barista posting reports on this site.

I'd be happy to put a pair in one of my Majors, as I've continuously pointed out (; > ) to have a side-by-side HB comparison, and begin contributing the moment that Major burrs become available.
I do think that taking note that the cut of the burr is more aggressive, and may, occasionally, require a second attempt at starting the grinder, wouldn't be a great huge deterrent for me.

Hi All,
This is my first post on H-B, so let me start off by saying hi! First off let me get the conflict of interest stuff out of the way, I am both a home barista and also work at Barefoot Coffee Roasters in sales and wrench turning, both myself and BCR for buy products from Great Infusions.

That being said, I originally bought a set of these burrs intending to use them on my home super jolly but i already had new burrs on my home unit and one of the super jollys at BCR was due for a burr change. So i threw them on it instead. Hot Damn! When i started the thing up it I couldn't dose fast enough. I did have a handful of times where the burrs stalled. But after a little while that went away. The baristi put a load of coffee through our grinders, far more then a home user ever would (if you are, apply for a job) so i was really interested in seeing how the burrs would fare wear wise... After 4 months the Duranium burrs still are rockets.

We actually almost used the Duranium SJ for WRBC this year... We had a loaner robur show up in the mail unexpectedly.

So in recap: on our bar, i heart duranium.

Gugies1 wrote: This is my first post on H-B, so let me start off by saying hi!
We had a loaner robur show up in the mail unexpectedly.

Hi Scott. If the baristi I met and the coffee I drank are any indication of what a BCR barista/wrench's opinion is worth, then pay close attention, Those folk impressed me muchly.
A Robur show up in the mail unexpectedly... yeah. One of these days I hope to utter such a phrase... ; >

I think I saw that these burrs could be used in a Mini-E. Is that correct? Would that grinder be up to the task?

Thanks.

-Joe

Gugies1 wrote:Hi All,
This is my first post on H-B, so let me start off by saying hi!

Welcome, Scott!

I had the pleasure to watch Scott pour latte art at Great Infusions a month or two ago.. I learned a TON from watching him! [I wrote a review of the visit as well as a "How To" article on steaming milk and pouring latte art, much of it based on what I learned from watching you. They are on my website.].

Please hang around as you have a ton of valuable info to share!

I received Duranium yesterday. I believed every home barista are interested in this burrs like me because the blind test of the burrs beat Kony. So, I wanted to join this thread to give you some updates about this new burrs. First thing I did after I received them is to measure them. It's a very interesting result. I used digital scale (this scale was to measure diamond).
One burr is 90.0g, the other is 90.3g, a little different in weight. I measured the original burrs from my Super jolly, both of them are 87.8g. I owned my super jolly for two years. If they have some weight different, I can understand. But their weight still the same, and the brand new Duranium burrs have a little weight different. I want to ask others owners, did anyone of you notice the weight different situation?
Before I ask GreatInfusions I want to hear your option. Meanwhile, you may be interested know, I come from Taiwan. Before I came to US, I had been using the Taiwan's made "Super jolly" or Chinese Mazzer fore several years. It has very high quality and the price is only 1/2 less than Super Jolly.
Michael mention those new burrs worked well on those "Chinese Mazzer". Because the Chinese Mazzer may use better tougher motor. I can tell you this model motor provide 1/2 HP. But in Taiwan, there are two other models of grinders (all made in Taiwan, build from Super Jolly model) and the only difference is the burrs. The expensive one using super jolly burrs and other model using Taiwan made burrs. I observed occasional stalling problem in cheaper Taiwan-made grinder. Every time it happens, it send message to that me I need to clean the grinder. Basically, I made 5 shots for adjusting new burrs, today. I didn't have any stalling situation.
I will keep updating here.

FWW,YMMV
I am happy to say that my well used ancient model Mazzer SJ (doser removed) took to the Duranium burrs with a passion. The first grind was clumped. After that, I have found the grind to be fluffy and unbelievably consistent. There may be a change in the taste profile and when I get back to a roast that I am more familiar with, I shall be better able to judge.
Already, I know that I would not go back to the steel burrs. These will probably last the rest of my life and be passed on!
I would suggest Duranium to anyone buying a used machine or wanting to replace burrs.
Cheers
Richard / espressme
PS Notice in a post above that a new Capacitor could be needed to correct for a stalling at startup. Mine did not need it.

serenewu wrote:I received Duranium yesterday. I believed every home barista are interested in this burrs like me because the blind test of the burrs beat Kony.

I was unaware of this blind test (in fact, I'm unaware of any bona fide blind testing of any grinders ), and would be very interested in learning the details. Where did you hear about it, and how was it designed? Has anyone performed blind testing to compare standard vs. Duranium burrsets on the SJ?

serenewu wrote:So, I wanted to join this thread to give you some updates about this new burrs. First thing I did after I received them is to measure them. It's a very interesting result. I used digital scale (this scale was to measure diamond).
One burr is 90.0g, the other is 90.3g, a little different in weight. I measured the original burrs from my Super jolly, both of them are 87.8g. I owned my super jolly for two years. If they have some weight different, I can understand. But their weight still the same, and the brand new Duranium burrs have a little weight different. I want to ask others owners, did anyone of you notice the weight different situation?

Sorry, I didn't think to weigh the new burrs. Next time I clean the grinder, I'll pull the top burr off and weigh it. My old SJ burrs weigh 89.0g and 88.9g (virtually identical on a 0.1g resolution scale). That's only 1g less than your Duranium burr weights. IIRC, the new burrs were a bit taller than the old ones, and as a result, my SJ grind setting is slightly coarser than it used to be.

espressme wrote:... I have found the grind to be fluffy and unbelievably consistent. There may be a change in the taste profile and when I get back to a roast that I am more familiar with, I shall be better able to judge.
Already, I know that I would not go back to the steel burrs. These will probably last the rest of my life and be passed on!
I would suggest Duranium to anyone buying a used machine or wanting to replace burrs.

I've had the Duranium burr on my SJ for over 3 months, and have no intention of going back to the standard burrset. The stalling issues went away after the first month. I only had a handful of stalling incidents, mostly associated with small beans wedged between the burrs. If you tighten the grind setting while the grinder is off, this definitely increases the chance of a stall. Nonetheless, stalling is a real issue with these new burrs, so be careful, at least during the first few weeks.